In "Fundamentals of Database Systems", the main aim is to explain the basic concepts of building databases using clear explanations and real-world examples. The authors focus mainly on the relational model and incorporate modern database technologies, such as object-oriented approaches. The book covers areas like data warehousing, data mining, web databases, and more. They discuss advanced modeling techniques for databases, including active, temporal, and spatial databases. The research also delves into real-world applications like GIS, genome databases, and digital libraries. In essence, the goal is to help readers understand the key principles of designing and managing databases effectively for various applications.